Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
6e娱乐（网址:QY81.COM）6e娱乐_6e娱乐_6e娱乐_6e娱乐_6e娱乐6e娱乐_6e娱乐_6e娱乐_vUU2sZZyv
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
